Datasheet

4-30
Cisco ONS 15454 SDH Reference Manual, R7.0
October 2008
Chapter 4 Optical Cards
4.13.2 OC192 LR/STM64 LH 1550 Card-Level Indicators
The OC192 LR/STM64 LH 1550 card detects SF, LOS, or LOF conditions on the optical facility. Refer
to the Cisco ONS 15454 SDH Troubleshooting Guide for a description of these conditions. The card also
counts section and line BIP errors from B1 and B2 byte registers in the section and line overhead.
Caution You must use a 20-dB fiber attenuator (19 to 24 dB) when working with the OC192 LR/STM64 LH 1550
card in a loopback. Do not use fiber loopbacks with the OC192 LR/STM64 LH 1550 card. Using fiber
loopbacks causes irreparable damage to the OC192 LR/STM64 LH 1550 card.
4.13.2 OC192 LR/STM64 LH 1550 Card-Level Indicators
Table 4-14 describes the three card-level LED indicators on the OC192 LR/STM64 LH 1550 card.
4.13.3 OC192 LR/STM64 LH 1550 Port-Level Indicators
You can find the status of the OC192 LR/STM64 LH 1550 card ports using the LCD screen on the
ONS 15454 SDH fan-tray assembly. Use the LCD to view the status of any port or card slot; the screen
displays the number and severity of alarms for a given port or slot. Refer to the Cisco ONS 15454 SDH
Troubleshooting Guide for a complete description of the alarm messages.
4.14 OC192 LR/STM64 LH ITU 15xx.xx Card
Note For specifications, see the “A.6.13 OC192 LR/STM64 LH ITU 15xx.xx Card Specifications” section on
page A-40.
Sixteen distinct STM-64 ITU 100 GHz DWDM cards comprise the ONS 15454 SDH DWDM channel
plan. The OC192 LR/STM64 LH ITU 15xx.xx card provides one long-range SDH STM-64 port per card,
compliant with ITU-T G.707 and G.957, and Telcordia GR-253-CORE (except minimum and maximum
transmit power, and minimum receive power). The port operates at 9.95328 Gbps over unamplified
distances up to 60 km with different types of fiber such as C-SMF or dispersion compensated fiber
limited by loss and/or dispersion.
Table 4-14 OC192 LR/STM64 LH 1550 Card-Level Indicators
Card-Level LED Description
Red FAIL LED The red FAIL LED indicates that the card processor is not ready. The FAIL
LED is on during reset and flashes during the boot process. Replace the card
if the red FAIL LED persists.
ACT/STBY LED
Green (Active)
Amber (Standby)
If the ACT/STBY LED is green, the card is operational and ready to carry
traffic. If the ACT/STBY LED is amber, the card is in standby mode or is
part of an active ring switch (MS-SPRing).
Amber SF LED The amber SF LED indicates a signal failure or condition such as LOS, LOF,
or high BERs on one or more card ports. The amber SF LED is also on if the
transmit and receive fibers are incorrectly connected. If the fibers are
properly connected and the link is working, the light turns off.